Resolves: fdo#54024 color values not showing with custom colors

that are unknown in the palette

Change-Id: Icb80ad0d16f0315e21c14e748e91f505edd699c3

cui/source/inc/cuitabarea.hxx

@@ -722,7 +722,7 @@ private:
     DECL_LINK( SelectColorLBHdl_Impl, void * );
     DECL_LINK( SelectValSetHdl_Impl, void * );
     DECL_LINK( SelectColorModelHdl_Impl, void * );
-    long ChangeColorHdl_Impl( void* p );
+    void ChangeColor(const Color &rNewColor);
     DECL_LINK( ModifiedHdl_Impl, void * );
 
     long CheckChanges_Impl();